Assertion (A): For each 1° longitude towards the East, 4 minutes are to be added and each 1° longitude towards the West, 4 minutes are to be subtracted.

Reason (R): The earth rotates on its axis from East to West.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A. 111.
3. A is true but R is false.
4. A is false but R is true.

I travelled from Tokyo, Japan to Alaska, USA. I was very sad to lose a day. How did this happen?

1. Crossed the IDL
2. Crossed the Pacific Ocean
3. Crossed over to another country
4. Crossed the Prime Meridian.

A great circle is a circle drawn on the surface of a sphere with radius :

1. equal to the radius of the sphere.
2. equal to half the radius of the sphere.
3. larger than the radius of the sphere.
4. less than the radius of the sphere.

Which of the following are great circles?

1. Lines of Longitudes
2. Lines of Latitudes
3. Equator
4. Both (1) and (3)